DE2325733

Sulfur oxides, particularly sulfur dioxide, present in waste gas streams are separated therefrom by contacting the sulfur oxides with a sodium sulfite-sodium bisulfite extraction liquor having a pH of at least 6, regenerating a portion of the sulfur oxides-containing extraction liquor by adding calc...

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Main Authors WALL, BRUCE IRVING, ESCALON, CALIF., US, ARNAUD, JOSE LUIS, DIAMONDVILLE, WY., US, HARRIS, HENRY CLINTON, GREEN RIVER, WY., US
Format Patent
LanguageEnglish
Published 22.11.1984
Subjects
CHEMISTRY
COMPOUNDS OF THE METALS BERYLLIUM, MAGNESIUM, ALUMINIUM,CALCIUM, STRONTIUM, BARIUM, RADIUM, THORIUM, OR OF THERARE-EARTH METALS
INORGANIC CHEMISTRY
METALLURGY
PERFORMING OPERATIONS
PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
SEPARATION
TRANSPORTING
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Summary:Sulfur oxides, particularly sulfur dioxide, present in waste gas streams are separated therefrom by contacting the sulfur oxides with a sodium sulfite-sodium bisulfite extraction liquor having a pH of at least 6, regenerating a portion of the sulfur oxides-containing extraction liquor by adding calcium hydroxide thereto to raise the pH of the liquor to about 8 to 10, removing a calcium sulfite precipitate from the regenerated extraction liquor, and mixing the solids-free regenerated extraction liquor with the sulfur oxides-containing extraction liquor to maintain its pH of at least 6.
Bibliography:Application Number: DE19732325733